I've been into the less now for a few months I have a 90w UFO and a 65w Hans and I like what u seen but now I what to step it up. Which led lights can reach a half a pound to a pound? And how many plants in a 4x4 space or even smaller? Please share ur experiences that got u to reach these yields
Let's talk yields!
- Thread starter Greenup
- Start date
puffenuff
Well-Known Member
Most growers will need an estimate 300-800w of led to hit 1\2 to 1lb. In a 4x4 you'll want at least 600w to get respectable results. The number of plants will depend on container size and veg time. These are just general guidelines I follow. Others may recommend differently
vostok
Well-Known Member
I was taught yield is a measure of experience and gene selection, you ain't gonna get much with a 90w ufo or any mid range LED, stick to convention and go the Mh/hps way
stickybuds*
Active Member
Vostok is spot on
Hps/mh, experience, gene selection and your setup is what yield you will pull
This is what I do
I will buy 2 packs of seed, grow them and keep a cutting from each plant, stress them and play with them and keep the best ones (good yeild and high)
Do another grow with the best plants, take cutting again at least 3 cutting from each plant and them pick the best plant out the lot based on yeild, high and one that can take a lot of stress
And that roots quick and easy
Now you have the best plant left out the 2 packs of seeds
I will take a lot of cutting off the plant, root them and veg them for a few weeks and try topping/removing selective leaves, lst ect
Find out what works best
On diffent plants, ( side by side test ) after this, you know how to train the plant and you have the best plant and you will yeild a lot 15oz's or more with a 600w hps light in a 4ft x 4ft room
But just buying seeds and growing them you would be lucky to get 10oz's
It take a long time and a lot of skill to get high yield
Hps/mh, experience, gene selection and your setup is what yield you will pull
This is what I do
I will buy 2 packs of seed, grow them and keep a cutting from each plant, stress them and play with them and keep the best ones (good yeild and high)
Do another grow with the best plants, take cutting again at least 3 cutting from each plant and them pick the best plant out the lot based on yeild, high and one that can take a lot of stress
And that roots quick and easy
Now you have the best plant left out the 2 packs of seeds
I will take a lot of cutting off the plant, root them and veg them for a few weeks and try topping/removing selective leaves, lst ect
Find out what works best
On diffent plants, ( side by side test ) after this, you know how to train the plant and you have the best plant and you will yeild a lot 15oz's or more with a 600w hps light in a 4ft x 4ft room
But just buying seeds and growing them you would be lucky to get 10oz's
It take a long time and a lot of skill to get high yield
gk skunky
Well-Known Member
I agree with this. Though IMHO I'd say with just buying seeds and growing under a 600 I'd be more inclined to say along the range of 6-8 with decent results, 10 on the better side and ~4 if things don't go so well. LOL
As far as LED. Not sure always been a HID grower. But I'm really hoping this area 51 XGS 190 I got going can compare to small 400W HPS grow. Hoping for 6oz off a single 190W which sounds like high hopes, but who knows. Things are looking fairly inline to do so. Though if I only get 4oz I'd still be ok with that, better than most 250W HPS grows.
SupraSPL
Well-Known Member
To give you some idea what to expect, the A51 should dissipate 165W @ 30% so that is about 50 PAR Watts. Then there are reflector and lens losses call it 15% so you get 42.5 PAR Watts in the canopy.
The 400 HPS with brand new bulbs dissipates 400W @ 34% so 136 PAR Watts minus 25% reflector losses so you get 102 PAR Watts in the canopy. So the 400 HPS gets more than twice as many photons into the canopy assuming a brand new bulb.
The 400 HPS with brand new bulbs dissipates 400W @ 34% so 136 PAR Watts minus 25% reflector losses so you get 102 PAR Watts in the canopy. So the 400 HPS gets more than twice as many photons into the canopy assuming a brand new bulb.
stardustsailor
Well-Known Member
What if I told you ,that in fact it is the A 51 with its 42.5 PAR Watts,that
probably has about the same if not more photons (in absolute number of photons =umols ) ,
than the 400Watt HPS ?
Or if it is not The A 51 ,it can be another led light ...
Simple physics there ....
The longer the wavelengths ,the more photons for the same amount of given radiant power ...
HPS is mainly green and yellow wls ....
Leds are (usually ) heavy in red wls ...
....
1 watt red light contains almost double amount of photons than 1 watt of blue light ....
Guys, you 've to relax a tad ,with the efficiency numbers and records ..
Or the PAR watts or Horsepower or what else...
It doesn't work that way ...Not only that way ...A whole lotta more to be taken into consideration than just power/PAR watts /efficiency of the x led ....
No ...
Leds are way powerfull and versatile illumination regarding horticulture ..
HPS and MH are just ...more familiar ..To put it this way ...Auto-pilots ....
Leds are another story ....
300-400 Watts of them can beat the yields of any 600-1000 Watt HID light ...
But not on "Auto -pilot " .
It takes a lot more ...
Only for the brave ...
SupraSPL
Well-Known Member
SDS, the area 51 spectrum is not necessarily more efficient than the HPS spectrum. There is very little red or deep red in the 3700K and there is a lot more blue in the 3700K than the HPS, which is consuming a good portion of the PAR watts. So I respectfully disagree, the HPS really is putting down more than 2X the SGS-190 and the OP should not expect an equal harvest.
I am not trying to make our lighting endeavors more about efficiency than buds, I understand there is a point of diminishing returns (we dont want to run the LEDs too soft) but it it really is all about photons in the canopy, and PAR watts is a great starting point to have this discussion. It is very hard to make an argument that 42 PAR watts beats 102 PAR Watts.
I am not trying to make our lighting endeavors more about efficiency than buds, I understand there is a point of diminishing returns (we dont want to run the LEDs too soft) but it it really is all about photons in the canopy, and PAR watts is a great starting point to have this discussion. It is very hard to make an argument that 42 PAR watts beats 102 PAR Watts.
foreverflyhi
Well-Known Member
Would this mean that the sg190 wont out perform a 400 watt?
wingerdinger
Well-Known Member
and you could buy a gavita 1000watt DE for the price of 2 XGS-190
Yodaweed
Well-Known Member
Those gavitas only work with 220v not 110v so most americans cant use
I want one but don't have 220v here 
spazatak
Well-Known Member
just out of curiosity what is the point if its running at almost the same power.... seems like the saving arent there to justify the cost
SupraSPL
Well-Known Member
I hear that, HID is hard to beat. A pair of 190s will consume 380W and a 400 HPS will consume 440W so there is not much power savings there. The upside of the LED is higher quality buds and no need to replace the bulb every 6 months. I was using some 18 month old bare 600 HPS and only getting .3-.4 grams/W on my OGs.
greenlikemoney
Well-Known Member
EXACTLY, and that is why it is perfect to supplement your HID main light with LEDS so that your BUD takes advantage of the 640-665nm red spectrum from the LEDS.
Higher quality buds, isn't that everyones end game?